FUEL INJECTION CONTROLLER FOR DIESEL ENGINE

• Main Author: ITOYAMA HIROYUKI
• Format: Patent
• Language: English
• Published: 31.03.1997
• Edition: 6
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

PROBLEM TO BE SOLVED: To feed appropriate fuel injection according to driving conditions and provide both of accelerating and exhaust emission controllability by correcting fuel injection quantity according to the driving conditions such as presence/absence of exhaust gas recirculation and the exhaust gas recirculating flow. SOLUTION: A target EGR quantity Megr is read in a step 11. The EGR rate Regr in an engine is read in a step 2. Difference dEGR between Megr and Regr is found in a step 13. A compensation coefficient Kqsolh is operated from a table using dEGR in a step 14. A target injection Drvq is read in a step 15 and difference between the target injection Drvq and the previous injection Qsoln-1 is found in the step 16 so as to set to Dtq (Dtq=Drvq-Qsoln-1 ). The compensation injection quantity Qsolb is found (Qsolb=Qsoln-1 + Dtq×Kqsolh) in the step 17 so as to complete the processing.